Britain’s Prince William (L) laughs as his wife, Catherine (C), the Duchess of Cambridge, stands next to a Sopwith Pup vintage plane he is sitting in at the Omaka Aviation Heritage Center near Blenheim April 10, 2014. Britain’s Prince William and his wife Kate are undertaking a 19-day official visit to New Zealand and Australia with their son George. REUTERS/Phil Noble (NEW ZEALAND – Tags: ROYALS ENTERTAINMENT TPX IMAGES OF THE DAY) – RTR3KNB1